def execute(self):
"""Send LLDP Packets every 'POLLING_TIME' seconds to all switches."""
switches = list(self.controller.switches.values())
for switch in switches:
try:
of_version = switch.connection.protocol.version
except AttributeError:
of_version = None
if not (switch.is_connected() and of_version in [0x01, 0x04]):
continue
for interface in switch.interfaces.values():
# Avoid ports with speed == 0
if interface.port_number == 65534:
continue
lldp = LLDP()
lldp.chassis_id.sub_value = DPID(switch.dpid)
port_type = UBInt16 if of_version == 0x01 else UBInt32
lldp.port_id.sub_value = port_type(interface.port_number)
ethernet = Ethernet()
ethernet.ether_type = EtherType.LLDP
ethernet.source = interface.address
ethernet.destination = constants.LLDP_MULTICAST_MAC
ethernet.data = lldp.pack()
packet_out = self.build_lldp_packet_out(
of_version, interface.port_number, ethernet.pack())
if packet_out is not None:
name = 'kytos/of_lldp.messages.out.ofpt_packet_out'
content = {
'destination': switch.connection,
'message': packet_out
}
event_out = KytosEvent(name=name, content=content)
self.controller.buffers.msg_out.put(event_out)
log.debug("Sending a LLDP PacketOut to the switch %s",
switch.dpid)
def execute(self):
"""Implement a loop to check switches liveness."""
switches = list(self.controller.switches.values())
for switch in switches:
if not (switch.is_connected() and
switch.connection.protocol.version == 0x01):
continue
# Gerar lldp para cada uma das portas do switch
# Gerar o hash de cada um dos pacotes e armazenar
for port in switch.features.ports:
output_action = ActionOutput()
output_action.port = port.port_no
# Avoid ports with speed == 0
if port.port_no.value == 65534:
continue
ethernet = Ethernet()
ethernet.ether_type = constants.LLDP_ETHERTYPE
ethernet.source = port.hw_addr
ethernet.destination = constants.LLDP_MULTICAST_MAC
lldp = LLDP()
lldp.chassis_id.sub_value = DPID(switch.dpid)
lldp.port_id.sub_value = port.port_no
ethernet.data = lldp.pack()
packet_out = PacketOut()
packet_out.actions.append(output_action)
packet_out.data = ethernet.pack()
event_out = KytosEvent()
event_out.name = 'kytos/of_lldp.messages.out.ofpt_packet_out'
event_out.content = {'destination': switch.connection,
'message': packet_out}
self.controller.buffers.msg_out.put(event_out)
log.debug("Sending a LLDP PacketOut to the switch %s",
switch.dpid)
def execute(self):
"""Send LLDP Packets every 'POLLING_TIME' seconds to all switches."""
switches = list(self.controller.switches.values())
for switch in switches:
try:
of_version = switch.connection.protocol.version
except AttributeError:
of_version = None
if not switch.is_connected():
continue
if of_version == 0x01:
port_type = UBInt16
local_port = Port10.OFPP_LOCAL
elif of_version == 0x04:
port_type = UBInt32
local_port = Port13.OFPP_LOCAL
else:
# skip the current switch with unsupported OF version
continue
interfaces = list(switch.interfaces.values())
for interface in interfaces:
# Avoid the interface that connects to the controller.
if interface.port_number == local_port:
continue
lldp = LLDP()
lldp.chassis_id.sub_value = DPID(switch.dpid)
lldp.port_id.sub_value = port_type(interface.port_number)
ethernet = Ethernet()
ethernet.ether_type = EtherType.LLDP
ethernet.source = interface.address
ethernet.destination = constants.LLDP_MULTICAST_MAC
ethernet.data = lldp.pack()
# self.vlan_id == None will result in a packet with no VLAN.
ethernet.vlans.append(VLAN(vid=self.vlan_id))
packet_out = self._build_lldp_packet_out(
of_version, interface.port_number, ethernet.pack())
if packet_out is not None:
event_out = KytosEvent(
name='kytos/of_lldp.messages.out.ofpt_packet_out',
content={
'destination': switch.connection,
'message': packet_out
})
self.controller.buffers.msg_out.put(event_out)
log.debug("Sending a LLDP PacketOut to the switch %s",
switch.dpid)
msg = '\n'
msg += 'Switch: %s (%s)\n'
msg += ' Interfaces: %s\n'
msg += ' -- LLDP PacketOut --\n'
msg += ' Ethernet: eth_type (%s) | src (%s) | dst (%s)\n'
msg += ' LLDP: Switch (%s) | port (%s)'
log.debug(msg, switch.connection.address, switch.dpid,
switch.interfaces, ethernet.ether_type,
ethernet.source, ethernet.destination,
switch.dpid, interface.port_number)